The content of your /etc/modprobe.d/nvidia.conf file is not correct. It should read
options nvidia NVreg_DeviceFileMode=0660
You forgot ‘nvidia’ – and NVreg_ModifyDeviceFiles=0 means to not create /dev/nvidia* nodes at all.
The content of your /etc/modprobe.d/nvidia.conf file is not correct. It should read
options nvidia NVreg_DeviceFileMode=0660
You forgot ‘nvidia’ – and NVreg_ModifyDeviceFiles=0 means to not create /dev/nvidia* nodes at all.